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ULTRA OIL
™
www.weil-mclain.com
HIGH-EFFICIENCY OIL BOILER
Water - Chimney or Direct Vent | 99-173 MBH
Series 3 | Efficiency 87%
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Durable 3-pass heat
exchanger design
Easy to install and
service
Made in USA with
Weil-McLain quality
HIGH EFFICIENCY CAST IRON OIL
BOILER AT 87% AFUE
™
APPLICATIONS
INCLUDE:
Residential
Light Commercial
Multiple Boilers
Indirect-fired Water Heating
Radiant Heating
...And Much More
WEIL-MCLAIN LEADS THE INDUSTRY WITH ITS
PREMIUM, SMART, DURABLE OIL BOILER.
With an extensive list of features for both contractors
and homeowners including:
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Proven three-pass cast iron heat exchanger with captured
elastomer seals
Pre-wired for an optional fully-integrated control system
that can manage automated applications
Adaptable door design and interchangeable side panels
that can accomodate most installation conditions
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Venting options - chimney or direct vent
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Burner options - Beckett NX or AFG, Carlin and Riello
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All housed in a sleek, innovatively styled jacket with rear
piping and wiring openings, and concealed controls for
an appliance-like appearance.
THREE PASS DESIGN
WEIL-MCLAIN PROVEN TECHNOLOGY
Weil-McLain has been using a three pass design concept
for over 70 years because it provides better flame control,
and more efficient fuel utilization, which reduces heating
costs. The Ultra Oil has incorporated finite element
modeling to enhance overall boiler operation.
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Computer designed flueway fins increase the heat transfer surface
area, which extracts more heat and increases efficiency without
penalizing boiler back pressure
The wider flueways decrease the negative impact of fouling
An added benefit of the three pass design is the horizontal
configuration, which makes virtually all of the combustion chamber,
turnaround, and flueways visible from the front of the boiler for
easy cleaning and maintenance
Silicone coated fiberglass rope insures a positive seal
Revolutionary rear section design directs the flue gas flow into the
flueways without sacrificing pressure drop through the inner and
the outer flueways which eliminates rear refractory
CAPTURED SEALS-OVER 45 YEARS OF
RELIABLE PERFORMANCE
Boiler sections will expand and contract as they heat
and cool. Our captured seal allows the cast iron to
move while preventing leaks, unlike rigid metal push
nipples. The flexible elastomer sealing rings guarantee
a watertight seal while the precision-machined port
grooves secure them in place, and protect them from
the contaminants of the water.
ULTRA OIL
HIGH EFFICINCY OIL BOILERS
™
™
DISTINCTIVE STYLING
JACKET AND SIDE PANEL DESIGN STYLISH APPEARANCE & EASY ACCESS
Ultra Oil has a modern appearance that combines
appliance-like design features for placement in
high traffic living spaces, with easy serviceability
for the contractor and homeowner.
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The snap-on front jacket panel allows easy entry to the full
access burner door
The left and right side panels are interchangeable which
eliminates installation mistakes
All piping, wiring, and venting connections are located in
the rear of the boiler for a cleaner look
The entire housing and top control tray can be easily
removed for hand trucking
REVERSIBLE SWING - AWAY DOOR FLEXIBLE INSTALLATION OPTIONS
Ultra Oil features a full access, reversible swingaway door, which exposes virtually the entire
combustion area and all flue-ways for simplified
inspection, cleaning, and maintenance. This
design also incorporates a mounting bracket that
can be installed on either the left or right side of
the front section for installation in small, confined
spaces and corners.
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Removable door lessens the overall weight when
trucking
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The symmetrical design enhances strength and durability
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Bolts on both sides create a uniform consistent seal
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A quick-disconnect plug cuts burner power when the
door is open
VENTING OPTIONS
CHIMNEY OR DIRECT VENT
The Ultra Oil boiler provides venting installation
flexibility. It can be easily vented to an existing
chimney, or direct vented using a pre-packaged
termination and combustion air kit.
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Barometric damper included when venting to a chimney
No chimney needed, and direct vent options provides
better indoor air quality by protecting against possible
contaminated inside air
No power-assisted fan needed to help exhaust flue
products
Direct vent kit includes 15' of vent pipe and an outside
termination cap
BURNER OPTIONS
BECKETTTM, CARLINTM OR RIELLO
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Beckett NX - (Chimney or Direct Vent)
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Beckett AFG - (Chimney Vent Only)
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Carlin - (Chimney Vent Only)
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Riello - (Chimney or Direct Vent)
CONCEALED
CONTROLS
TOP MOUNTED, HINGED CONTROL PODAND INTEGRATED CONTROL SYSTEM
The top mounted hinged control POD includes
a factory installed external service switch and
temperature/pressure gauge for easy
viewing. The unique, angled POD provides
control system protection from dirt, moisture
and temperature fluctuations, and includes a
combination temperature control and low
water cutoff. Factory assembled, pre-wired
terminal strips simplify field wiring of incoming
power, mounted circulators and additional
limit controls that may be required by local
codes. The wiring strip also includes
dedicated terminals to quickly and easily
install the optional Advanced Features Module
(AFM) during or after the initial installation.
ULTRA OIL
HIGH EFFICINCY OIL BOILERS
™
™
ADVANCED FEATURES
MODULE
OPTIONAL ADVANCED FEATURES MODULE (AFM)
Designed by Weil-McLain and Tekmar® exclusively
for the Ultra Oil boiler, the Advanced Features Module
(AFM) was developed with the heating contrator in
mind. The easy-to-read display takes the guesswork
out of determining system operation, and easy to
understand symbols indicate which devices the
control has turned on, and whether the control and
system is functioning as it should. The digital display
can be mounted on the panel, or up to 500 feet away
from the boiler.
AFM FEATURES INCLUDE:
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Dual Boiler Operation - The AFM will control two boilers to
supply the required target temperature. The minimum time
between each boiler operation is the fire delay setting plus the
minimum inter-stage delay setting.
Outdoor Reset
Low Temperature
Mixing
Equal Run Time Rotation - The AFM includes an adjustable
setting to control the firing order of the boilers to ensure that
both boilers receive equal amounts of use.
Boiler Outdoor Reset - The AFM operates the boiler(s) to
maintain the boiler supply temperature based on the outdoor air
temperature and the boiler characterized heating curve settings.
Mixing Outdoor Reset - The AFM is capable of providing a reset
supply water temperature from the primary boiler loop to a
secondary mixed loop when a mixing device is used (variable
speed pump or floating action valve).
Indirect Domestic Hot Water Operation - The AFM has
three different settings for DHW operation based upon pipe
configuration: DHW in parallel no priority, DHW in parallel with
priority, and DHW in primary/secondary no priority. The AFM
also has DHW limits to prevent freeze-up and DHW post purge
and mixing purge to maximize efficiency.
Outdoor
DHW Priority
Reset
Setpoint Operation - The AFM has two setpoint modes
available: setpoint in parallel where the primary pump does not
turn on, but may operate on either a boiler demand or a DHW
demand, and primary pump during setpoint where the primary
pump is powered.
The AFM also includes powered pump ouputs, warm weather
shut down, built-in pump and valve exercising and thermal
shock protection functionality.
SetOutdoor
Point Operation
Reset
STANDARD AND OPTIONAL
STANDARD EQUIPMENT:
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OPTIONAL EQUIPMENT:
Three-pass cast iron heat exchanger with
captured elastomer seals
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Beckett NX-(Chimney or Direct Vent)
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Beckett AFG-(Chimney Vent Only)
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Reversible swing-away burner door
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Carlin-(Chimney Vent Only)
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Silicone coated fiberglass sealing rope
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Riello-(Chimney or Direct Vent)
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Boiler drain valve
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Direct vent kit
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Relief valve (30psi)
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50 psi relief valve
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Attractive jacket design
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Hinged control POD
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Service switch
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Temperature/pressure gauge
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Factory wired terminal strips with labeled wires
(pre-wired to accept external limits such as high
limit and low water cut off)
Combination limit and low water cut off
Quick disconnect burner plug
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Barometric damper
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Circulator
High Capacity
Coil Design
ADVANCED FEATURE MODULE (AFM)
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Outdoor Reset
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Low Temperature Mixing
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Setpoint Operation
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DHW Priority
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DHW Priority Override
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DHW Post Purge
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Stage Fire Two Boilers
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Minimum Boiler Setting
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Automatic Boiler Differential
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Boiler Protection
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Warm Weather Shutdown
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Freeze Protection
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Mixing Device Exercise
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Pump Exercise
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Test Sequence
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LCD Remote Display
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Run Hours Log
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Plug-in Terminals
ENDLESS HOT WATER
Weil-McLain brings you the perfect match.
An Aqua Plus® indirect-fired water heater
and an Ultra Oil boiler are the best value
combination for all your comfort heating
and hot water needs.
AQUA Plus
Indirect-Fired
Water Heaters
Get more hot water when you need it, all
at a lower operating cost.
ULTRA OIL
HIGH EFFICINCY OIL BOILERS
™
™
UO
-5E
UO
-4E
UO
-3E
UO
-3R
E*
DIM
EN
SIO
NS
DIMENSIONS
Supply Tapping
1 1/2"
1 1/2”
1 1/2”
1 1/2”
45"
Depth-Boiler (L)
25"
25"
29"
33"
UO
-5E
1 1/2”
41"
UO
-4E
1 1/2”
37"
UO
-3E
1 1/2”
37"
UO
-3R
E*
1 1/2”
DA
TA
Return Tapping
Depth-With Burner (B)
Chimney Rectangle
8"x 8"
8"x 8"
8"x 8"
8"x 8"
Chimney Round
6"
6"
6"
6"
Chimney Height
15'
15'
15'
15'
Water Volume
15.00 Gal.
15.00 Gal.
18.25 Gal.
21.50 Gal.
Approximate Shipping Weight
636
636
737
852
-5E
Burner Capacity (GPH)
0.80
1.00
1.20
1.40
CSA Input (MBH)
112
140
168
196
DOE Heating Capacity (MBH)
99
123
148
173
Net Ratings (MBH)
86
107
129
150
DOE Seasonal Efficiency AFUE (%)
87
87
87
87
Draft Loss Through Boiler
(inches wc)
.000
.020
.025
.040
UO
UO
-4E
UO
-3E
E*
UO
-3R
RA
TIN
GS
RATINGS
*The .80 GPH firing rate is achieved by changing the burner nozzle, refer to burner instructions or
boiler’s rating label for correct selection. For Beckett AFG, also use the burner low fire rate baffle
included in burner carton.
In the interest of continual improvements in product and performance, Weil-McLain reserves the
right to change specifications without notice.
WM1409_BRO_015_ULTRA OIL
500 Blaine Street, Michigan City, IN 46360-2388 | www.weil-mclain.com